Ciatrick Fason is the best of the second-tier RBs but players like K-State's Darren Sproles stood out at the Senior Bowl.

Texas' Cedric Benson and Auburn's Ronnie Brown and Carnell Williams are getting all the attention regarding the 2005 running back class. Going unnoticed, however, is its impressive depth. It is unlikely that another running back is taken in the first round, but there could be 12 more that wind up coming off the board by the end of the first day.

Depending on how free agency shakes out, the Dolphins (pick No. 2), Buccaneers (No. 5), Raiders (No. 7), Cardinals (No. 8), Seahawks (No. 23) and Colts (No. 29) could all be in the market for one of the elite three running back prospects. For those that are unable to address the need in Round 1, there is still plenty to be excited about in the remaining two rounds on Day 1. Additionally, teams such as the 49ers, Bears, Titans, Panthers, Saints, Jets, Steelers and Eagles that don't want to spend a top pick on the position but still need to improve their running back depth with a promising young player, have to feel good about how the draft board is shaping up.

Here's a look at the second-tier of running back talent in the upcoming draft.